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(ModeL) 3 Sheets-Sheet 1.

S. G. SHEPARD.

PLATFORM ADJUSTMENT FOR HARVESTBRS.

\ Patentd Oct. 28, 1884.

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7 WIT/V586? cgnpher, wmin um. o c.

(ModeL) "3 Sheets-Sheet 2. S '0. SHEPARD.

PLATFORM ADJUSTMENT FOR HARVESTBRS. No. 307,342. Patented Oct. 28, 1884.

WITNESSES INVE/ITOI? Ii fforney (-Model.) 3 Sheets-Sheet 3.

s. 0. SHEPARD. PLATFORM ADJUSTMENT FOR HARVESTERS. No. 307.342. PatentedOct. 28, 1884.

IN VEll/TOR tf yW/T/VESSES W I I 1 M65 A florney N. PETERS.Plmlol-ilhogmpmr. wishingtm D. c,

UNTTED .STATEs SYLVANDER o.

PATENT OrrreE.

SHEPARD, OF AKRON, OHIO, ASSIGNOR OF ONE-HALF TO LEVIS MILLER, OF SAMEPLACE.

PLATFORM-ADJUSTM ENT FOR HARVESTERS.

SPECIFICATION forming part of Letters Patent No. 307,342, dated October28, 1884.

Application filed August 23, 1883.

To all whom it may concern.-

Be it known that I, SYLVANDER SHEPARD, of Akron, inthe county of Summitand State of Ohio, have invented a new and useful Improvement inPlatform-Adjustments for Har vesters, of which the following is afull,clear, and exact description, reference being had to the accompanyingdrawings, making part of this specification.

My invention relates to mechanism for adjusting the frame and cutter-barof the machine, so as to regulate the height at which the grain shall besevered; and its objectis to provide a mechanism for the above purposewhich shall operate simultaneously and equally upon both sides of themachine, and theoperation of which shall be produced by the manipulationof a hand-shaft so placed as to be conveniently accessible to theoperator.

To the above ends my invention consists in the provision of a revolvingshaft acting through the medium of gear pinions upon toothed sectorspivoted to the frame for the purpose of raisingand lowering said frameand its attached cutter-bar, the said revolving shaft bei ng actuated bya worm or hand rod or shaft, as hereinafter explained.

In order that my invention may be fully understood, I will proceed todescribe it with reference to the accompanying drawings, in which-Figure 1 is an under side plan view of my improved machine. Fig. 2 is aside elevation 'of the same, taken from the stubble or drivewheel side.Fig. 3 is asimilar view of the 0pposite or grain side of the machine.Fig. 4 is a perspective view, on an enlarged scale, of a portion of myimproved mechanism in opera tive position.

In the said drawings, A designates the frame or body of the machine,which may be of any suitable form, and B B designate thecarrying-wheels. Extending entirely across and beneath the frame is ashaft, 0, which isjournaled at its ends in two curved and-groovedstandard pieces or castings, D l), secured to the sides of the frame. Ateach extremity the shaft 0 carries a gear-pinion, c, which lies insidethe curved castings D D, as indicated in Fig. 4.

(ModelJ E designates a shaft carrying at its upper end a hand-wheel, c,and at its lower end a worm, c, the said shaftbeingjournaled in lugsdupon the casting D. The thread of the worm c meshes with the teeth ofthe pinion c,while 5 5 the latter in turn meshes with the teeth of theracksector F. There are two of these racksectors, each of which ispivotally secured to the frame atthe forward ends of the sides. Thespindles or axles G, upon which the carrying wheels -13 B are mounted,are formed upon or secured to the segmental section of each of thesectors F.

H designates a shaft which extends partly across the frame A, the innerend of the said shaft being journaled in a bracket or hanger, a, and itsouter end j ournaled in the side beam of the frame. Upon its inner endthe shaft H carries a cylinder, 71, having a wave camgroovc, I, formedin its periphery, within which works a pin, t, carrying afriction-roller journaled on a stud formed upon or secured to'areciprocating bar, I, which forms aheelextension of or is suitablyconnected to the l cutter-bar. The outer extremity of the shaft l H,which passes freely through an 'eye in the [apex or center of thecontiguous sector F, carries a gcarpinion, 7L, and the teeth of saidpinion mesh with the teeth formed upon the periphery of the ring J,secured to the inner side l of the wheel B, concentrically with thesame.

The rack-sector F upon the opposite side of the machine is securedpivotal] y to the frame by a nut and bolt, as shown, or in any othersuitable manner.

K designates the draft-pole, provided with a toothed segment and pivotedto the frame, 3 as shown. The teeth of the segment K mesh with those ofa similar segment, 7.:, attached to an operating-lever, K, which is alsopiv o0 oted to the frame.

The parts L, Z, and Z designate devices pertaining to a bindermechanism, (which is embodied in a separate application,) and have noespecial connection with the present inven- 9 5 'tion.

The operation is as follows: The height of the frame and cutter-bar isadjusted by turning the hand-wheel e, the movement of which iscommunicated through the shaftEand worm loo 0 to one of the gear-pinionsa, and from said pinions to the toothed sectors F, whereby the frame Ais raised or lowered upon the carryingwvheels B B, carrying thecutter-bar with it. It will be seen that the relation between thegear-pinion h upon the shaft H and the toothed rim J upon the wheel B isnot aiiected by the various adjustments of the frame, but remainsconstant under all circumstances.

Having thus described my invention, I elai m as new and desire to secureby Letters Patent 1. The combination, with the transverse shalt carryinga gearpinion on each end, and the curved standards or castings formingthe support for said" shalt and inelosing its gearpinions, of thehand-shaft journaled upon one of said curved castings and provided witha Worm engaging with the contiguous gear-pinion, substantially asspecified.

2. In a harvester, a shaft carrying a camwheel and pinion, and the drivin gWheel havin g the toothed ring or gear for actuating said pinion,in eoi'nbination with toothed sectors pivoted in line with said shaft,and provided, respectively, with the drive and grain Wheel axles, thetransverse shaft having a pinion on each end for actuating said sectors,and the worm -whee1 engaging with one of said pinions for actuating saidshaft and sectors, substantially as and for the purpose specified.

In testimony whereof I have hereunto set my hand this 14th day ofAugust, A. D. 1883.

(J. SHEPARD. \Vitnesses:

H. S. RHoDns, O. L. SADLER.

